//  Copyright 2023 Harness, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package generic

import (
	"errors"
	"fmt"
	"regexp"
)

const (
	duplicateFileError = "file: [%s] with Artifact: [%s], Version: [%s] and registry: [%s] already exist"
	filenameRegex      = `^[a-zA-Z0-9][a-zA-Z0-9._~@,/-]*[a-zA-Z0-9]$`
	regNameFormat      = "registry : [%s]"
)

// ErrDuplicateFile is returned when a file already exists in the registry.
var ErrDuplicateFile = errors.New("duplicate file error")

func validateFileName(filename string) error {
	filenameRe := regexp.MustCompile(filenameRegex)

	if !filenameRe.MatchString(filename) {
		return fmt.Errorf("invalid filename: %s", filename)
	}
	return nil
}
